When the opportunity arises for Emma, Stephanie, Olivia, Andrea and Mia to enter a float building competition for a parade to celebrate the history of Heartlake City, not everything goes to plan. When Emma designs a sandcastle themed float to build with her friends, a misunderstanding occurs and Stephanie decides upon a fruit themed float instead. When Tania, a girl that Stephanie has a history of competition with, convinces Emma that she should build her sandcastle design with a different group of girls, Emma is faced with a tough dilemma and one that will put her friendship with Stephanie to the test. Will she be able to get everyone to put aside their differences in time for the big parade?